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#80833 - 06/01/02 09:19 PM 2002 nec changes
rb Offline
Junior Member
Registered: 06/01/02
Posts: 2
Loc: rossville indiana u.s.a
i have a question regarding sharing a neautral conductor,i have not seen the new code book but have heard prior to realese that you now could not share neautral conductors on branch circuits.is this correct? if anyone could answer this i would greatly appreciate it.....thanks
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#80834 - 06/02/02 04:47 AM Re: 2002 nec changes
Frank Cinker Offline
Member
Registered: 07/29/01
Posts: 311
Loc: Pennsylvania
rb,

NEC Article 100, Definitions. Branch circuit, multiwire. The definition describes a shared neutral. As far as I know the new Code does not prohibit the use of a shared neutral. In some cases, for branch circuits feeding computer equipment it's better to run two 2-wire circuits instead of one 3-wire circuit.

[This message has been edited by Frank Cinker (edited 06-02-2002).]
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#80835 - 06/02/02 05:27 AM Re: 2002 nec changes
rb Offline
Junior Member
Registered: 06/01/02
Posts: 2
Loc: rossville indiana u.s.a
thankyou frank for your help,i apreciate it.no this is going to be for a room addition in wich i plan to run two 23/3 romex from the panel to feed the lighting and receps.i usually do industrial work and thought i had better chek before the inspestor does.thanks again.....
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#80836 - 06/02/02 07:27 AM Re: 2002 nec changes
Bill Addiss Offline
Member
Registered: 10/07/00
Posts: 3875
Loc: NY, USA
rb,

Is this for a bedroom?
If so, what you may have heard was in refererence to the new requirements for AFCI breaker protection. If this is the case you would have to locate a special 2 pole AFCI breaker that will work with 3 wire circuits. At the present time the only brand I know of is Cutler Hammer and they may even be difficult to locate.

23/3 -?

Bill
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#80837 - 06/02/02 01:54 PM Re: 2002 nec changes
sparky Offline
Member
Registered: 10/18/00
Posts: 5303
AFCI's are the death of multiwire circuits..
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#80838 - 06/03/02 04:42 AM Re: 2002 nec changes
Redsy Offline
Member
Registered: 03/28/01
Posts: 2056
Loc: Bucks County PA
Are you sure you are not referring to the rule (408.21) prohibiting a neutral or grounded conductor from "sharing" a terminal lug that is not designed for more than one conductor?
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#80839 - 06/06/02 07:32 AM Re: 2002 nec changes
DB Offline
Member
Registered: 03/05/02
Posts: 18
Loc: St. Louis
Should the ckts that share a neutral be fed from different legs? This way the neutral would only carry the unbalanced load.
_________________________
DB
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